Wayne HSG200, Руководство пользователя

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SEQUENCE OF OPERATION
– HSG SERIES POWER GAS CONVERSION BURNER
UTILIZING WAYNE P/N 64420-002 IGNITION CONTROL W/BUILT IN 30 SECOND PRE-PURGE
On a call for heat, 24V goes to the motor start relay and air switch. Once the motor reaches operating rpm,
combustion air pressure closes the air proving switch, energizing the ignition control.
This Wayne ignition control has an internal 30 second pre-purge timer. After the initial 30 second pre-
purge, the control simultaneously energizes the gas valve and ignition transformer. Gas flows to the burner
head and the transformer produces a spark at the electrode establishing main burner flame.
At the start of each heat cycle, there is a trial for ignition period of four (4) seconds duration. Normally,
burner flame will be established before the end of this period. Once the flame is established and the trial
for ignition ends, sparking will cease and the flame rod will provide flame monitoring to the ignition control
for the remainder of the heat cycle. If the flame should be extinguished during the heat cycle, the ignition
control will attempt to establish the main burner flame. If this does not occur within the trial for ignition
period, the ignition control will go into lockout de-energizing the gas valve and ignition transformer. The
LED on the ignition control will flash an error code in this case. These error codes are listed on the ignition
control’s label near the LED and in Table 4 above.
To restart the system, the main power or thermostat must be de-energized momentarily, then re-
energized. If at any time during the heat cycle, there is an insufficient supply of combustion air to the
burner, the air switch will open, putting the system into lockout closing the gas valve.
See Figure 26 for the wiring diagram for burners with the Wayne 64420-002 control.
HSG SERIES BURNER UTILIZING HONEYWELL IGNITION CONTROLS
SEQUENCE OF OPERATION
– HSG SERIES POWER GAS CONVERSION BURNER
UTILIZING HONEYWELL S89E GAS PRIMARY P/N 62758-002 WITH EXTERNAL
30 SECOND PRE-PURGE TIMER P/N 62388-001 AND RESISTOR P/N 62530-001
On a call for heat, voltage (24V) is applied to the motor start relay and air switch. Once the blower motor
reaches operating rpm, combustion air pressure causes the air proving switch to close, the contacts
energize the external 30 second pre-purge timer. After the 30 second pre-purge timing, the S89E is
energized.
The S89E gas primary control has an internal 8 second safe start check. After the initial 30 second pre-
purge provided by the external timer, the S89E gas primary control is energized, the 8 second safe start
check will commence. Once this is accomplished, the S89E activates the gas valve allowing gas to flow to
the burner head. Simultaneously, the S89E control energizes the ignition transformer, producing a spark at
the electrode, establishing main burner flame.
At the start of each heat cycle, there is a trial for ignition period of four (4) seconds duration. Normally,
burner flame will be established before the end of this period. Once the flame is established, sparking will
cease and flame sensor will provide flame monitoring to the S89E gas primary control for the remainder of
the heat cycle.
When utilizing the S89E gas primary control with the eternal 30 second pre-purge timer, a 10K ohm
resistor is wired in parallel between the output terminals of the 30 second pre-purge timer and the input
terminal to the S89E gas primary control. The function of this resistor is to keep a load on the output
terminal of the external 30 second pre-purge timer, after the initial call for heat and 30 second start pre-
purge and 8 second safe start check.
This promotes simultaneous re-
ignition of the main burner flame after the S89E’s 8 second safe start
check, overriding the 30 second pre-purge. This control scheme is used in oven or similar applications
where process temperatures must remain constant.
Should the flame be extinguished during the heat cycle, the S89E primary ignition control will go into the 8
second safe start check after which time it will re-energize the gas valve and ignition transformer in an
attempt to re-establish the main burner. If this does not occur within the 4 second trial for ignition period,
S89E gas primary control will go into lockout de-energizing the gas valve and ignition transformer. To